c62d2810 |
1 | /* FCE Ultra - NES/Famicom Emulator |
2 | * |
3 | * Copyright notice for this file: |
4 | * Copyright (C) 2002 Ben Parnell |
5 | * Copyright (C) 2002 Paul Kuliniewicz |
6 | * |
7 | * This program is free software; you can redistribute it and/or modify |
8 | * it under the terms of the GNU General Public License as published by |
9 | * the Free Software Foundation; either version 2 of the License, or |
10 | * (at your option) any later version. |
11 | * |
12 | * This program is distributed in the hope that it will be useful, |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
15 | * GNU General Public License for more details. |
16 | * |
17 | * You should have received a copy of the GNU General Public License |
18 | * along with this program; if not, write to the Free Software |
19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
20 | */ |
21 | |
22 | /* PK: SDL joystick input stuff */ |
23 | |
24 | #include <stdlib.h> |
25 | #include <unistd.h> |
26 | #include <fcntl.h> |
27 | #include <errno.h> |
28 | |
29 | #include "sdl.h" |
30 | static SDL_Joystick *jo[4] = {NULL, NULL, NULL, NULL}; |
31 | |
32 | static void ConfigJoystick (int z); |
33 | |
34 | #define JOY_A 0x01 |
35 | #define JOY_B 0x02 |
36 | #define JOY_SELECT 0x04 |
37 | #define JOY_START 0x08 |
38 | #define JOY_UP 0x10 |
39 | #define JOY_DOWN 0x20 |
40 | #define JOY_LEFT 0x40 |
41 | #define JOY_RIGHT 0x80 |
42 | |
43 | /* Gets the current joystick position information. */ |
44 | uint32 GetJSOr (void) |
45 | { |
46 | int n; /* joystick index */ |
47 | int b; /* button index */ |
48 | int *joym; /* pointer to a joystick's button map */ |
49 | Sint16 pos; /* axis position */ |
50 | uint32 ret = 0; /* return value */ |
51 | |
52 | for (n = 0; n < 4; n++) |
53 | { |
54 | if (joy[n] == 0) |
55 | continue; |
56 | joym = joyBMap[n]; |
57 | |
58 | /* Axis information. */ |
59 | pos = SDL_JoystickGetAxis(jo[n], joyAMap[n][0]); |
60 | if (pos <= -16383) |
61 | ret |= JOY_LEFT << (n << 3); |
62 | else if (pos >= 16363) |
63 | ret |= JOY_RIGHT << (n << 3); |
64 | pos = SDL_JoystickGetAxis(jo[n], joyAMap[n][1]); |
65 | if (pos <= -16383) |
66 | ret |= JOY_UP << (n << 3); |
67 | else if (pos >= 16383) |
68 | ret |= JOY_DOWN << (n << 3); |
69 | |
70 | /* Button information. */ |
71 | for (b = 0; b < 4; b++) |
72 | { |
73 | if (SDL_JoystickGetButton(jo[n], joym[b])) |
74 | ret |= (1 << b) << (n << 3); |
75 | } |
76 | } |
77 | |
78 | return ret; |
79 | } |
80 | |
81 | /* Cleanup opened joysticks. */ |
82 | void KillJoysticks (void) |
83 | { |
84 | int n; /* joystick index */ |
85 | |
86 | for (n = 0; n < 4; n++) |
87 | { |
88 | if (joy[n] != 0) |
89 | SDL_JoystickClose(jo[n]); |
90 | } |
91 | SDL_QuitSubSystem(SDL_INIT_JOYSTICK); |
92 | return; |
93 | } |
94 | |
95 | /* Initialize joysticks. */ |
96 | int InitJoysticks (void) |
97 | { |
98 | int n; /* joystick index */ |
99 | if(!(joy[0]|joy[1]|joy[2]|joy[3])) |
100 | return(0); |
101 | SDL_InitSubSystem(SDL_INIT_JOYSTICK); |
102 | for (n = 0; n < 4; n++) |
103 | { |
104 | if (joy[n] == 0) |
105 | continue; |
106 | |
107 | /* Open the joystick under SDL. */ |
108 | jo[n] = SDL_JoystickOpen(joy[n] - 1); |
109 | if (jo[n] == NULL) |
110 | { |
111 | printf("Could not open joystick %d: %s.\n", |
112 | joy[n] - 1, SDL_GetError()); |
113 | joy[n] = 0; |
114 | continue; |
115 | } |
116 | |
117 | /* Check for a button map. */ |
118 | if (!(joyBMap[n][0] | joyBMap[n][1] | joyBMap[n][2] | |
119 | joyBMap[n][3])) |
120 | { |
121 | ConfigJoystick(n); |
122 | } |
123 | } |
124 | |
125 | return (1); |
126 | } |
127 | |
128 | #define WNOINPUT(); for(;;){uint8 t; if(read(fileno(stdin),&t,1)==-1) \ |
129 | {break;}} |
130 | |
131 | /* Configure a joystick button. */ |
132 | static void BConfig (int n, int b) |
133 | { |
134 | SDL_Event event; /* SDL event structure */ |
135 | WNOINPUT(); |
136 | while (1) |
137 | { |
138 | uint8 t; |
139 | if (read(fileno(stdin), &t, 1) == -1) |
140 | { |
141 | if (errno != EAGAIN) |
142 | break; |
143 | } |
144 | else |
145 | break; |
146 | |
147 | if (SDL_PollEvent(&event) && event.type == SDL_JOYBUTTONDOWN) |
148 | { |
149 | joyBMap[n][b] = event.jbutton.button; |
150 | goto endsa; |
151 | } |
152 | } |
153 | |
154 | endsa: |
155 | WNOINPUT(); |
156 | |
157 | return; |
158 | } |
159 | |
160 | /* Joystick button and axis configuration. */ |
161 | void ConfigJoystick (int n) |
162 | { |
163 | int sa; /* buffer value */ |
164 | char buf[128]; /* input buffer */ |
165 | |
166 | printf("\n\n Joystick button and axis configuration:\n\n"); |
167 | printf(" Select the joystick axes to use for the virtual d-pad.\n"); |
168 | printf(" If you do not wish to assign an axis, press Enter to skip\n"); |
169 | printf(" that axis.\n"); |
170 | printf(" Push the button to map to the virtual joystick.\n"); |
171 | printf(" If you do not wish to assign a button, press Enter to skip\n"); |
172 | printf(" that button.\n Press enter to continue...\n"); |
173 | getchar(); |
174 | printf("**** Configuring joystick %d ****\n\n", n + 1); |
175 | |
176 | printf("** Enter axis to use for the x-axis (default 0).\n"); |
177 | fgets(buf, sizeof(buf), stdin); |
178 | joyAMap[n][0] = ('0' <= buf[0] && buf[9] <= '9') ? atoi(buf) : 0; |
179 | |
180 | printf("** Enter axis to use for the y-axis (default 1).\n"); |
181 | fgets(buf, sizeof(buf), stdin); |
182 | joyAMap[n][1] = ('0' <= buf[0] && buf[9] <= '9') ? atoi(buf) : 1; |
183 | |
184 | sa = fcntl(fileno(stdin), F_GETFL); |
185 | fcntl(fileno(stdin), F_SETFL, O_NONBLOCK); |
186 | |
187 | printf("** Press button for \"Select\".\n"); |
188 | BConfig(n, 2); |
189 | |
190 | printf("** Press button for \"Start\".\n"); |
191 | BConfig(n, 3); |
192 | |
193 | printf("** Press button for \"B\".\n"); |
194 | BConfig(n, 1); |
195 | |
196 | printf("** Press button for \"A\".\n"); |
197 | BConfig(n, 0); |
198 | |
199 | fcntl(fileno(stdin), F_SETFL, sa); |
200 | } |